Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Karthik, Nikhil"'
The quantum numbers of monopoles in $R^3$ in the presence of massless fermions have been analyzed using a uniform flux background in $S^2\times R$ coupled to fermions. An analogous study in $T^2\times R$ is performed by studying the discrete symmetri
Externí odkaz:
http://arxiv.org/abs/2410.19984
Autor:
Chowdhury, Talal Ahmed, Izubuchi, Taku, Kamruzzaman, Methun, Karthik, Nikhil, Khan, Tanjib, Liu, Tianbo, Paul, Arpon, Schoenleber, Jakob, Sufian, Raza Sabbir
Lattice quantum chromodynamics (QCD) calculations share a defining challenge by requiring a small finite range of spatial separation $z$ between quark/gluon bilinears for controllable power corrections in the perturbative QCD factorization, and a lar
Externí odkaz:
http://arxiv.org/abs/2409.17234
Autor:
Cloet, Ian, Gao, Xiang, Mukherjee, Swagato, Syritsyn, Sergey, Karthik, Nikhil, Petreczky, Peter, Zhang, Rui, Zhao, Yong
We present a lattice QCD calculation of the $x$-dependent pion and kaon distribution amplitudes (DA) in the framework of large momentum effective theory. This calculation is performed on a fine lattice of $a=0.076$~fm at physical pion mass, with the
Externí odkaz:
http://arxiv.org/abs/2407.00206
Autor:
Karthik, Nikhil, Narayanan, Rajamani
We numerically address the issue of which monopole operators are relevant under renormalization group flow in three-dimensional parity-invariant noncompact QED with $4$ flavors of massless two-component Dirac fermion. Using lattice simulation and fin
Externí odkaz:
http://arxiv.org/abs/2401.01856
Two-dimensional QCD with $N_c$ colors and $N_f$ flavors of massless fermions in the fundamental representation is expected to exhibit conformal behavior in the infrared governed by a $u(N_f)$ WZW model with level $N_c$. Using numerical analysis withi
Externí odkaz:
http://arxiv.org/abs/2312.13929
Autor:
Gao, Xiang, Hanlon, Andrew D., Holligan, Jack, Karthik, Nikhil, Mukherjee, Swagato, Petreczky, Peter, Syritsyn, Sergey, Zhao, Yong
We present a lattice QCD calculation of the unpolarized isovector quark parton distribution function (PDF) of the proton utilizing a perturbative matching at next-to-next-to-leading-order (NNLO). The calculations are carried out using a single ensemb
Externí odkaz:
http://arxiv.org/abs/2212.12569
Autor:
Edwards, Robert G., Egerer, Colin, Karpie, Joseph, Karthik, Nikhil, Monahan, Christopher J., Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Richards, David, Romero, Eloy, Sufian, Raza Sabbir, Zafeiropoulos, Savvas
The non-singlet helicity quark parton distribution functions (PDFs) of the nucleon are determined from lattice QCD, by jointly leveraging pseudo-distributions and the distillation spatial smearing paradigm. A Lorentz decomposition of appropriately is
Externí odkaz:
http://arxiv.org/abs/2211.04434
We perform perturbative computations in a lattice gauge theory with a conformal measure that is quadratic in a non-compact abelian gauge field and is nonlocal, as inspired by the induced gauge action in massless QED$_3$. In a previous work, we showed
Externí odkaz:
http://arxiv.org/abs/2209.07907
Autor:
Gao, Xiang, Hanlon, Andrew D., Karthik, Nikhil, Mukherjee, Swagato, Petreczky, Peter, Scior, Philipp, Shi, Shuzhe, Syritsyn, Sergey, Zhao, Yong, Zhou, Kai
We present lattice QCD calculations of valence parton distribution function (PDF) of pion employing next-to-next-leading-order (NNLO) perturbative QCD matching. Our calculations are based on three gauge ensembles of 2+1 flavor highly improved stagger
Externí odkaz:
http://arxiv.org/abs/2208.02297
Autor:
Egerer, Colin, Joó, Bálint, Karpie, Joseph, Karthik, Nikhil, Khan, Tanjib, Monahan, Christopher J., Morris, Wayne, Orginos, Kostas, Radyushkin, Anatoly, Richards, David G., Romero, Eloy, Sufian, Raza Sabbir, Zafeiropoulos, Savvas
We present the first exploratory lattice quantum chromodynamics (QCD) calculation of the polarized gluon Ioffe-time pseudo-distribution in the nucleon. The Ioffe-time pseudo-distribution provides a frame-independent and gauge-invariant framework to d
Externí odkaz:
http://arxiv.org/abs/2207.08733